Also known as the competitive exclusion principle, this refers to the proposition that the populations of two competing species cannot remain at stable levels over time. When two species compete for control over a limited amount of resources, the dominant species will take advantage over its weak competitor. This will cause the weaker species to get excluded from its previous territory and its population to drop over time. The law is named after Soviet biologist Georgii Gause although it was formulated first by American biologist Joseph Grinnell in his 1904 paper “The Origin and Distribution of the Chestnut-Backed Chickadee”.
